I highly recommend PowerCompacts. They are so efficient I use just 2 - 65W 6700K 24" tubes on our 100G tank.
They last nearly 2 years as well.

Chris.

"Craig Brye" wrote in message ...
I'm looking for some insight/experience into what lighting system (watts) I should get for my 75 gal. tank? This will be heavily planted with CO2 injection and all that good stuff. The tank is the standard 48" x 18".

Any advice would be appreciated!

--
Craig Brye
University of Phoenix Online